Following are a number of the generally Double U kind heaters, please click on the material to go to the right specification page. Also, the heaters can be tradition for different sizes, energy and voltage, when you need, please touch with us freely. M16/M18 Copper Thread +304SS tubeM16/M18 Full 304SSM16/M18 total CopperM16/M18 304ss thread+304ss green oil tubeM16/M18 complete 201SS tubeLujinxun U Shape Heating Element Tube M22 Thread 304 Stainless Steel 220V 1/2KW for Ultrasonic Cleaning Machine Specifications: Product Name: UShape Heating ElementTube+Thread Material:304 Stainless steelVoltage:220VPower:1/2KWThread Diameter:M22Tube Size:230mm/240mmCenter Distance:135mmPackage Contents: 1PCx heating pipe 01/ Application:The U sort heating tubes are widly used in kitchen home equipment identical specification would be replaced/M16 or M18 thread?The new heating pipe thread needs to be the same as the outdated heaitng pipe thread you can not establish or leaky/304 stainless-steel or copper?copper materials is the upgrade for the 304 stainless steel. Copper tube has elevated thermal conductivity than chrome steel tube, which like minded for the water quality of additional alkaline scale places. If you would like some other form or heaters,please contact with our customer,hope we will assist you,and wish you have attractive time! SHIPPING NOTICEAll packages from our store are registered site: 17track/en, PAYMENTVISA,Mastercard,WESTERN UNION,Maestro,Bank Transfer,QIVI WALLET,WebMoney,Boletol,PayPal WARRANTY SERVICEDelivery Time:Ship out within 3-5working daysAll emails may be replied inside 24 hours REFUND or RESENDIf items now not acquired or damaged,please cooperate with us to take pictures when you acquire it, then provide us the evidence,we will refund or resend a new one to you,thanks FEEDBACKAny questions please be happy contact with us earlier than you leaving a feedback,we will attempt the finest that will enable you solve it Immediately.